Add Schwag Roulette Demo

[hrsh22]

Overview

Adds a VRF‑powered "Schwag Roulette" demo under app/schwagroulette for fair, transparent, and engaging swag distribution at event booths.

Why this is useful

• Provably fair: Uses VRF to select outcomes, eliminating disputes and bias.
• Faster booth ops: One-tap spin and clear prize reveal streamlines handouts.
• Engaging UX: Visual wheel with prize images boosts attendee interaction.
• Mobile-friendly: Fully responsive layout with touch-friendly controls.
• Self‑contained: Lives entirely under app/schwagroulette/, safe to adopt or iterate without touching global config.

How to use

• Run the app and open /schwagroulette.
• Connect your wallet when prompted.
• Click “Spin.” A VRF request is made, the wheel animates to the VRF‑derived index, and the winning prize is displayed for fulfillment.

Scope

• All code and assets are contained within app/schwagroulette/. No global layout or config changes included.

Preview

• Desktop View:

• Mobile View

[CluEleSsUK]

Great work - thanks! Only a minor request is to run a linter over it - there's a mix of single and double quotes throughout, but otherwise looks amazing!

[hrsh22]

Hi @CluEleSsUK
Thanks for flagging that! I've run a linter and updated everything to use consistent double quotes. Appreciate it!